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Preneed Trust Investments (Cost and fair market values associated with preneed cemetery trust investments) (Details) - Preneed Cemetery Trust Investments - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Preneed cemetery trust investments $ 71,834 $ 65,486
Market value as a percentage of cost 99.80% 88.70%
Foreign Debt    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost   $ 4,803
Unrealized Gains   0
Unrealized Losses   (695)
Fair Market Value   4,108
Corporate debt    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost   22,968
Unrealized Gains   85
Unrealized Losses   (4,279)
Fair Market Value   18,774
Preferred stock    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost   16,236
Unrealized Gains   29
Unrealized Losses   (885)
Fair Market Value   15,380
Mortgage-backed securities    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost   0
Unrealized Gains   0
Unrealized Losses   0
Fair Market Value   0
Trust securities    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost $ 71,252 73,148
Unrealized Gains 4,425 796
Unrealized Losses (4,572) (9,083)
Fair Market Value 71,105 64,861
Accrued investment income    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost 729 625
Fair Market Value 729 625
Fair Value, Level 1 | Cash and money market accounts    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost 10,852 8,296
Unrealized Gains 0 0
Unrealized Losses 0 0
Fair Market Value 10,852 8,296
Fair Value, Level 1 | Common stock    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost 13,250 20,387
Unrealized Gains 2,191 682
Unrealized Losses (1,838) (3,161)
Fair Market Value 13,603 17,908
Fair Value, Level 2 | Municipal bonds    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost 496 458
Unrealized Gains 18 0
Unrealized Losses (4) (63)
Fair Market Value 510 $ 395
Fair Value, Level 2 | Foreign Debt    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost 7,574  
Unrealized Gains 160  
Unrealized Losses (656)  
Fair Market Value 7,078  
Fair Value, Level 2 | Corporate debt    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost 20,621  
Unrealized Gains 1,569  
Unrealized Losses (1,123)  
Fair Market Value 21,067  
Fair Value, Level 2 | Preferred stock    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost 16,287  
Unrealized Gains 8  
Unrealized Losses (947)  
Fair Market Value 15,348  
Fair Value, Level 2 | Mortgage-backed securities    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost 949  
Unrealized Gains 372  
Unrealized Losses (4)  
Fair Market Value 1,317  
Fair Value, Level 2 | Fixed income    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Cost 1,223  
Unrealized Gains 107  
Unrealized Losses 0  
Fair Market Value $ 1,330